Pete's Stuff has some great stories adapted on Power Point, they are made just for students with special needs
HiYah Software is all created in Power Point, but you don't need Power Point to use it, these simple programs expose our students to many concepts and they can "turn the pages" with their switches
Tar Heel Reader is a website where special needs teachers and others have shared thousands of simple books, created in Power Point, for their students. The books can be viewed or read to you online. Switch users can "turn the page" with their switch. Books can be downloaded for use offline.
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Ways to Further Adapt Power Point (for free)